100% Polyester Extreme Blackout technology blocks out 100% of outside light Energy Efficient design reduces energy lost through your windows by up to 50% Thermal properties help keep summer heat and winter chill out of your home Noise reduction by up to 45% helps you get a sounder, more uninterrupted sleep Built-in rod pocket fits curtain rods up to 1.5" in diameter Panels sold individually. Measure carefully prior to purchase (Image features 2 panels)